MAX17127 Maxim Integrated Products, MAX17127 Datasheet - Page 7

• Manufacturer Part Number: MAX17127
• Description: Six-String WLED Driver
• Manufacturer: Maxim Integrated Products

(Circuit of Figure 1. V
V
OUT
(V
_______________________________________________________________________________________
S
LED CURRENT WAVEFORMS
IN
= 32V, I
SWITCHING WAVEFORMS
= 26V, BRIGHTNESS = 100%)
STARTUP WAVEFORMS
= 12V, T
(BRIGHTNESS = 20%)
Six-String WLED Driver with Integrated
(BRIGHTNESS = 1%)
12V
OUT
= 120mA
2ms/div
1ms/div
1µs/div
A
= +25NC, unless otherwise noted.)
MAX17127 toc09
MAX17127 toc11
MAX17127 toc13
Typical Operating Characteristics (continued)
V
20V/div
0V
INDUCTOR
CURRENT
200mA/div
0mA
V
5V/div
0V
INDUCTOR
CURRENT
500mA/div
0A
V
20V/div
0V
V
20V/div
0V
V
10V/div
0V
I
20mA/div
0mA
INDUCTOR
CURRENT
500mA/div
0mA
FB1
LX
EN
LX
OUT
FB1
(BRIGHTNESS = 100%, LED OPEN ON FB1)
20mA
LED-OPEN FAULT PROTECTION
Step-Up Converter
LED CURRENT WAVEFORMS
STARTUP WAVEFORMS
(BRIGHTNESS = 100%)
(BRIGHTNESS = 50%)
12V
200ms/div
1ms/div
1ms/div
0mA
32V
MAX17127 toc10
MAX17127 toc12
MAX17127 toc14
V
5V/div
0V
INDUCTOR
CURRENT
500mA/div
0A
V
20V/div
0V
V
20V/div
0V
V
10V/div
0V
I
20mA/div
0mA
INDUCTOR
CURRENT
500mA/div
0mA
V
1V/div
0V
V
10V/div
0V
V
10V/div
10V
I
10mA/div
LED
FB2
EN
LX
OUT
FB1
FB1
FB2
OUT
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